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  <title>新建一个基于调色板的图像</title>
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  <div id="layout-content"><div id="function.imagecreate" class="refentry">
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  <h1 class="refname">imagecreate</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">imagecreate</span> &mdash; <span class="dc-title">新建一个基于调色板的图像</span></p>

 </div>
 <div class="refsect1 unknown-seealsp" id="refsect1-function.imagecreate-unknown-seealsp">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>imagecreate</strong></span>(<span class="methodparam"><span class="type">int</span> <code class="parameter">$x_size</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$y_size</code></span>): <span class="type">resource</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>imagecreate()</strong></span> 返回一个图像标识符，代表了一幅大小为
   <code class="parameter">x_size</code> 和 <code class="parameter">y_size</code> 的空白图像。
  </p>
  <p class="para">
   推荐使用 <span class="function"><a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>。
  </p>
  <p class="para">
   <div class="example" id="example-2647">
    <p><strong>示例 #1 新建一个新的 GD 图像流并输出图像</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-type:&nbsp;image/png"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$im&nbsp;</span><span style="color: #007700">=&nbsp;@</span><span style="color: #0000BB">imagecreate</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">50</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;or&nbsp;die(</span><span style="color: #DD0000">"Cannot&nbsp;Initialize&nbsp;new&nbsp;GD&nbsp;image&nbsp;stream"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$background_color&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">255</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$text_color&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecolorallocate</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">233</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">14</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">91</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagestring</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">5</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">5</span><span style="color: #007700">,&nbsp;&nbsp;</span><span style="color: #DD0000">"A&nbsp;Simple&nbsp;Text&nbsp;String"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$text_color</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagepng</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
  <p class="para">
   参见 <span class="function"><a href="function.imagedestroy.html" class="function">imagedestroy()</a></span> 和
   <span class="function"><a href="function.imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>。
  </p>
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